l10nflist.c
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上传日期:2009-03-27
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- /* Copyright (C) 1995-1999, 2000, 2001, 2002 Free Software Foundation, Inc.
- Contributed by Ulrich Drepper <drepper@gnu.ai.mit.edu>, 1995.
- This program is free software; you can redistribute it and/or modify it
- under the terms of the GNU Library General Public License as published
- by the Free Software Foundation; either version 2, or (at your option)
- any later version.
- This program is distributed in the hope that it will be useful,
- but WITHOUT ANY WARRANTY; without even the implied warranty of
- MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
- Library General Public License for more details.
- You should have received a copy of the GNU Library General Public
- License along with this program; if not, write to the Free Software
- Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307,
- USA. */
- /* Tell glibc's <string.h> to provide a prototype for stpcpy().
- This must come before <config.h> because <config.h> may include
- <features.h>, and once <features.h> has been included, it's too late. */
- #ifndef _GNU_SOURCE
- # define _GNU_SOURCE 1
- #endif
- #ifdef HAVE_CONFIG_H
- # include <config.h>
- #endif
- #include <string.h>
- #if defined _LIBC || defined HAVE_ARGZ_H
- # include <argz.h>
- #endif
- #include <ctype.h>
- #include <sys/types.h>
- #include <stdlib.h>
- #include "loadinfo.h"
- /* On some strange systems still no definition of NULL is found. Sigh! */
- #ifndef NULL
- # if defined __STDC__ && __STDC__
- # define NULL ((void *) 0)
- # else
- # define NULL 0
- # endif
- #endif
- /* @@ end of prolog @@ */
- #ifdef _LIBC
- /* Rename the non ANSI C functions. This is required by the standard
- because some ANSI C functions will require linking with this object
- file and the name space must not be polluted. */
- # ifndef stpcpy
- # define stpcpy(dest, src) __stpcpy(dest, src)
- # endif
- #else
- # ifndef HAVE_STPCPY
- static char *stpcpy PARAMS ((char *dest, const char *src));
- # endif
- #endif
- /* Pathname support.
- ISSLASH(C) tests whether C is a directory separator character.
- IS_ABSOLUTE_PATH(P) tests whether P is an absolute path. If it is not,
- it may be concatenated to a directory pathname.
- */
- #if defined _WIN32 || defined __WIN32__ || defined __EMX__ || defined __DJGPP__
- /* Win32, OS/2, DOS */
- # define ISSLASH(C) ((C) == '/' || (C) == '\')
- # define HAS_DEVICE(P)
- ((((P)[0] >= 'A' && (P)[0] <= 'Z') || ((P)[0] >= 'a' && (P)[0] <= 'z'))
- && (P)[1] == ':')
- # define IS_ABSOLUTE_PATH(P) (ISSLASH ((P)[0]) || HAS_DEVICE (P))
- #else
- /* Unix */
- # define ISSLASH(C) ((C) == '/')
- # define IS_ABSOLUTE_PATH(P) ISSLASH ((P)[0])
- #endif
- /* Define function which are usually not available. */
- #if !defined _LIBC && !defined HAVE___ARGZ_COUNT
- /* Returns the number of strings in ARGZ. */
- static size_t argz_count__ PARAMS ((const char *argz, size_t len));
- static size_t
- argz_count__ (argz, len)
- const char *argz;
- size_t len;
- {
- size_t count = 0;
- while (len > 0)
- {
- size_t part_len = strlen (argz);
- argz += part_len + 1;
- len -= part_len + 1;
- count++;
- }
- return count;
- }
- # undef __argz_count
- # define __argz_count(argz, len) argz_count__ (argz, len)
- #else
- # ifdef _LIBC
- # define __argz_count(argz, len) INTUSE(__argz_count) (argz, len)
- # endif
- #endif /* !_LIBC && !HAVE___ARGZ_COUNT */
- #if !defined _LIBC && !defined HAVE___ARGZ_STRINGIFY
- /* Make ' ' separated arg vector ARGZ printable by converting all the ' 's
- except the last into the character SEP. */
- static void argz_stringify__ PARAMS ((char *argz, size_t len, int sep));
- static void
- argz_stringify__ (argz, len, sep)
- char *argz;
- size_t len;
- int sep;
- {
- while (len > 0)
- {
- size_t part_len = strlen (argz);
- argz += part_len;
- len -= part_len + 1;
- if (len > 0)
- *argz++ = sep;
- }
- }
- # undef __argz_stringify
- # define __argz_stringify(argz, len, sep) argz_stringify__ (argz, len, sep)
- #else
- # ifdef _LIBC
- # define __argz_stringify(argz, len, sep)
- INTUSE(__argz_stringify) (argz, len, sep)
- # endif
- #endif /* !_LIBC && !HAVE___ARGZ_STRINGIFY */
- #if !defined _LIBC && !defined HAVE___ARGZ_NEXT
- static char *argz_next__ PARAMS ((char *argz, size_t argz_len,
- const char *entry));
- static char *
- argz_next__ (argz, argz_len, entry)
- char *argz;
- size_t argz_len;
- const char *entry;
- {
- if (entry)
- {
- if (entry < argz + argz_len)
- entry = strchr (entry, ' ') + 1;
- return entry >= argz + argz_len ? NULL : (char *) entry;
- }
- else
- if (argz_len > 0)
- return argz;
- else
- return 0;
- }
- # undef __argz_next
- # define __argz_next(argz, len, entry) argz_next__ (argz, len, entry)
- #endif /* !_LIBC && !HAVE___ARGZ_NEXT */
- /* Return number of bits set in X. */
- static int pop PARAMS ((int x));
- static inline int
- pop (x)
- int x;
- {
- /* We assume that no more than 16 bits are used. */
- x = ((x & ~0x5555) >> 1) + (x & 0x5555);
- x = ((x & ~0x3333) >> 2) + (x & 0x3333);
- x = ((x >> 4) + x) & 0x0f0f;
- x = ((x >> 8) + x) & 0xff;
- return x;
- }
- struct loaded_l10nfile *
- _nl_make_l10nflist (l10nfile_list, dirlist, dirlist_len, mask, language,
- territory, codeset, normalized_codeset, modifier, special,
- sponsor, revision, filename, do_allocate)
- struct loaded_l10nfile **l10nfile_list;
- const char *dirlist;
- size_t dirlist_len;
- int mask;
- const char *language;
- const char *territory;
- const char *codeset;
- const char *normalized_codeset;
- const char *modifier;
- const char *special;
- const char *sponsor;
- const char *revision;
- const char *filename;
- int do_allocate;
- {
- char *abs_filename;
- struct loaded_l10nfile **lastp;
- struct loaded_l10nfile *retval;
- char *cp;
- size_t dirlist_count;
- size_t entries;
- int cnt;
- /* If LANGUAGE contains an absolute directory specification, we ignore
- DIRLIST. */
- if (IS_ABSOLUTE_PATH (language))
- dirlist_len = 0;
- /* Allocate room for the full file name. */
- abs_filename = (char *) malloc (dirlist_len
- + strlen (language)
- + ((mask & TERRITORY) != 0
- ? strlen (territory) + 1 : 0)
- + ((mask & XPG_CODESET) != 0
- ? strlen (codeset) + 1 : 0)
- + ((mask & XPG_NORM_CODESET) != 0
- ? strlen (normalized_codeset) + 1 : 0)
- + (((mask & XPG_MODIFIER) != 0
- || (mask & CEN_AUDIENCE) != 0)
- ? strlen (modifier) + 1 : 0)
- + ((mask & CEN_SPECIAL) != 0
- ? strlen (special) + 1 : 0)
- + (((mask & CEN_SPONSOR) != 0
- || (mask & CEN_REVISION) != 0)
- ? (1 + ((mask & CEN_SPONSOR) != 0
- ? strlen (sponsor) : 0)
- + ((mask & CEN_REVISION) != 0
- ? strlen (revision) + 1 : 0)) : 0)
- + 1 + strlen (filename) + 1);
- if (abs_filename == NULL)
- return NULL;
- /* Construct file name. */
- cp = abs_filename;
- if (dirlist_len > 0)
- {
- memcpy (cp, dirlist, dirlist_len);
- __argz_stringify (cp, dirlist_len, PATH_SEPARATOR);
- cp += dirlist_len;
- cp[-1] = '/';
- }
- cp = stpcpy (cp, language);
- if ((mask & TERRITORY) != 0)
- {
- *cp++ = '_';
- cp = stpcpy (cp, territory);
- }
- if ((mask & XPG_CODESET) != 0)
- {
- *cp++ = '.';
- cp = stpcpy (cp, codeset);
- }
- if ((mask & XPG_NORM_CODESET) != 0)
- {
- *cp++ = '.';
- cp = stpcpy (cp, normalized_codeset);
- }
- if ((mask & (XPG_MODIFIER | CEN_AUDIENCE)) != 0)
- {
- /* This component can be part of both syntaces but has different
- leading characters. For CEN we use `+', else `@'. */
- *cp++ = (mask & CEN_AUDIENCE) != 0 ? '+' : '@';
- cp = stpcpy (cp, modifier);
- }
- if ((mask & CEN_SPECIAL) != 0)
- {
- *cp++ = '+';
- cp = stpcpy (cp, special);
- }
- if ((mask & (CEN_SPONSOR | CEN_REVISION)) != 0)
- {
- *cp++ = ',';
- if ((mask & CEN_SPONSOR) != 0)
- cp = stpcpy (cp, sponsor);
- if ((mask & CEN_REVISION) != 0)
- {
- *cp++ = '_';
- cp = stpcpy (cp, revision);
- }
- }
- *cp++ = '/';
- stpcpy (cp, filename);
- /* Look in list of already loaded domains whether it is already
- available. */
- lastp = l10nfile_list;
- for (retval = *l10nfile_list; retval != NULL; retval = retval->next)
- if (retval->filename != NULL)
- {
- int compare = strcmp (retval->filename, abs_filename);
- if (compare == 0)
- /* We found it! */
- break;
- if (compare < 0)
- {
- /* It's not in the list. */
- retval = NULL;
- break;
- }
- lastp = &retval->next;
- }
- if (retval != NULL || do_allocate == 0)
- {
- free (abs_filename);
- return retval;
- }
- dirlist_count = (dirlist_len > 0 ? __argz_count (dirlist, dirlist_len) : 1);
- /* Allocate a new loaded_l10nfile. */
- retval =
- (struct loaded_l10nfile *)
- malloc (sizeof (*retval)
- + (((dirlist_count << pop (mask)) + (dirlist_count > 1 ? 1 : 0))
- * sizeof (struct loaded_l10nfile *)));
- if (retval == NULL)
- return NULL;
- retval->filename = abs_filename;
- /* We set retval->data to NULL here; it is filled in later.
- Setting retval->decided to 1 here means that retval does not
- correspond to a real file (dirlist_count > 1) or is not worth
- looking up (if an unnormalized codeset was specified). */
- retval->decided = (dirlist_count > 1
- || ((mask & XPG_CODESET) != 0
- && (mask & XPG_NORM_CODESET) != 0));
- retval->data = NULL;
- retval->next = *lastp;
- *lastp = retval;
- entries = 0;
- /* Recurse to fill the inheritance list of RETVAL.
- If the DIRLIST is a real list (i.e. DIRLIST_COUNT > 1), the RETVAL
- entry does not correspond to a real file; retval->filename contains
- colons. In this case we loop across all elements of DIRLIST and
- across all bit patterns dominated by MASK.
- If the DIRLIST is a single directory or entirely redundant (i.e.
- DIRLIST_COUNT == 1), we loop across all bit patterns dominated by
- MASK, excluding MASK itself.
- In either case, we loop down from MASK to 0. This has the effect
- that the extra bits in the locale name are dropped in this order:
- first the modifier, then the territory, then the codeset, then the
- normalized_codeset. */
- for (cnt = dirlist_count > 1 ? mask : mask - 1; cnt >= 0; --cnt)
- if ((cnt & ~mask) == 0
- && ((cnt & CEN_SPECIFIC) == 0 || (cnt & XPG_SPECIFIC) == 0)
- && ((cnt & XPG_CODESET) == 0 || (cnt & XPG_NORM_CODESET) == 0))
- {
- if (dirlist_count > 1)
- {
- /* Iterate over all elements of the DIRLIST. */
- char *dir = NULL;
- while ((dir = __argz_next ((char *) dirlist, dirlist_len, dir))
- != NULL)
- retval->successor[entries++]
- = _nl_make_l10nflist (l10nfile_list, dir, strlen (dir) + 1,
- cnt, language, territory, codeset,
- normalized_codeset, modifier, special,
- sponsor, revision, filename, 1);
- }
- else
- retval->successor[entries++]
- = _nl_make_l10nflist (l10nfile_list, dirlist, dirlist_len,
- cnt, language, territory, codeset,
- normalized_codeset, modifier, special,
- sponsor, revision, filename, 1);
- }
- retval->successor[entries] = NULL;
- return retval;
- }
- /* Normalize codeset name. There is no standard for the codeset
- names. Normalization allows the user to use any of the common
- names. The return value is dynamically allocated and has to be
- freed by the caller. */
- const char *
- _nl_normalize_codeset (codeset, name_len)
- const char *codeset;
- size_t name_len;
- {
- int len = 0;
- int only_digit = 1;
- char *retval;
- char *wp;
- size_t cnt;
- for (cnt = 0; cnt < name_len; ++cnt)
- if (isalnum ((unsigned char) codeset[cnt]))
- {
- ++len;
- if (isalpha ((unsigned char) codeset[cnt]))
- only_digit = 0;
- }
- retval = (char *) malloc ((only_digit ? 3 : 0) + len + 1);
- if (retval != NULL)
- {
- if (only_digit)
- wp = stpcpy (retval, "iso");
- else
- wp = retval;
- for (cnt = 0; cnt < name_len; ++cnt)
- if (isalpha ((unsigned char) codeset[cnt]))
- *wp++ = tolower ((unsigned char) codeset[cnt]);
- else if (isdigit ((unsigned char) codeset[cnt]))
- *wp++ = codeset[cnt];
- *wp = ' ';
- }
- return (const char *) retval;
- }
- /* @@ begin of epilog @@ */
- /* We don't want libintl.a to depend on any other library. So we
- avoid the non-standard function stpcpy. In GNU C Library this
- function is available, though. Also allow the symbol HAVE_STPCPY
- to be defined. */
- #if !_LIBC && !HAVE_STPCPY
- static char *
- stpcpy (dest, src)
- char *dest;
- const char *src;
- {
- while ((*dest++ = *src++) != ' ')
- /* Do nothing. */ ;
- return dest - 1;
- }
- #endif